摘要
锂离子动力电池是我国新能源汽车宏观发展战略的关键部件,其安全性问题如热失控等至今依然是锂电池产品化、产业化发展过程中的关键技术瓶颈。本文针对三元锂电池包,以过充试验这种电池滥用形式对热失控现象进行探讨,预测锂离子动力电池发生热失控的趋势和时间,并结合试验现象,设计热失控过程的预警机制,然后基于ABB AC 800M设计一套预警控制系统,并通过半实物仿真平台进行模拟试验,验证了预警机制的有效性。该预警机制通过给驾驶人员提供热失控预警信息,保证了危险状况下乘客的逃生时间,为电动汽车的安全运行提供保障。
Lithium-ion power battery is the key component of the macro-development strategy of new energy vehicles in China,and its safety problems such as thermal runaway are still the key technical bottleneck in the process of lithium-ion battery production and industrialization.In this paper,the thermal runaway phenomenon of ternary lithium battery pack is discussed in the form of overcharge test.The trend and time of thermal runaway of lithium ion power battery are predicted.Combining with the experimental phenomena,the early warning mechanism of thermal runaway process is designed.Then a set of early warning control system is designed based on ABB AC 800M,and half of the system is passed.The effectiveness of the early warning mechanism is verified by the simulation test on the physical simulation platform.By providing drivers with early warning information of thermal runaway,the early warning mechanism ensures passengers'escape time under dangerous conditions and provides security for the safe operation of electric vehicles.
出处
《内燃机与配件》
2020年第9期232-234,共3页
Internal Combustion Engine & Parts
关键词
锂电池
热失控
预警机制
半实物仿真
lithium battery
thermal runaway
early warning mechanism
hardware-in-the-loop simulation
